University of Massachusetts Medical School Faculty Publications


Malignant melanoma within squamous cell carcinoma and basal cell carcinoma: is it a combined or collision tumor?--a case report and review of the literature

UMMS Affiliation

Department of Pathology

Publication Date


Document Type



Carcinoma, Basosquamous


Dermatology | Neoplasms | Oncology | Pathology | Skin and Connective Tissue Diseases


We report a case of a very unusual combined and collision basosquamous melanocytic malignant tumor on the chest of an 84-year-old man. To our knowledge, this is the first case report describing this entity. We attempt to address the diagnostic challenge and the clinical and histological characteristics of these rare neoplasms with a review of the English literature to further categorize and summarize what has been previously reported about these extraordinary tumors.

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Citation: Am J Dermatopathol. 2013 Apr;35(2):226-34. doi: 10.1097/DAD.0b013e3182545e27. Link to article on publisher's site

Related Resources

Link to Article in PubMed

Journal/Book/Conference Title

The American Journal of dermatopathology

PubMed ID